_______ buy your ticket from a ticket machine. There are lots of people there.
| A．Not | B．Not to | C．Don’t | D．Don’t to |
You ______ be polite to the old man.
| A．should | B．can’t | C．might | D．mustn’t |
--- Tom, where is your father?
--- I’m not sure．He_______ in his office．
| A．is | B．may be | C．maybe | D．may |
This Japanese dictionary Ellen’s. She is only person learning Japanese in our class.
| A．must be | B．can’t be |
| C．may be | D．can be |
--- Whose backpack is this?
--- It be Mary’s. She is looking for hers.
| A．can | B．must | C．may | D．can’t |
Mr. White is fixing his computer because there is __________ wrong with it.
| A．nothing | B．anything |
| C．something | D．everything |